Breakthrough bleeding is more likely with extended-cycle birth control pills but can happen with any key in.
In rare cases, spotting could signalpregnancy, particularly if you missed pills or didnt take them on time.
These could indicate a more serious issue, like an infection or ectopicpregnancy.

Verywell / Nusha Ashjaee
If the spotting persists or concerns you, seek medical advice.
Verywell / Nusha Ashjaee
Can Spotting Be Due to Pregnancy?
Spotting while on birth control can be a sign of pregnancy, but it’s not common.
This is a normal symptom of early pregnancy.
Ectopic pregnancies and most miscarriages typically happen within the first three months of pregnancy.
Undiagnosed ectopic pregnancies are life-threatening, and some miscarriages that cause heavy bleeding can be as well.
If you experience vaginal bleeding in addition to pain in the abdomen or pelvis, get immediate medical attention.
It can take a few months for your body to adapt to the new hormone levels.
Uterine fibroids:These noncancerous growths on the uterus tend to occur during the childbearing years.
Endometriosis:This condition pops up if uterine tissues grow outside of the uterus.
Birth control pills can relieve symptoms by keeping the body in a steady hormonal state.
Irregular bleeding usually stops after a few menstrual cycles.
Herbal supplements:A few herbs and herbal supplements have been linked to breakthrough bleeding.
Perimenopauseormenopause:Perimenopause is the stage before menopause when hormonal levels begin to level off.
Women are about 40 to 50 years old when they go through perimenopause.
During this phase, women may experience more breakthrough bleeding while on birth control pills.
Perimenopausal women are often prone to irregular cycles and heavy bleeding during this phase, too.
Is My Birth Control Working if I Have Spotting?
Spotting is a normal response to birth control and usually means your hormones are adjusting.
The bleeding usually follows a consistent pattern for several months until the body adjusts to the new hormone levels.
Then the bleeding stops.
The dosage could be too high, and a simple adjustment could fix the problem.
Or, there may be a co-occurring condition causing the abnormal bleeding.
If you experience them or other unusual symptoms, do not hesitate to call or see a healthcare provider.
The blood could be a sign of implantation.
A thorough evaluation by a healthcare provider should reveal the cause of the bleeding.
Should I Stop Taking Birth Control if I’m Spotting?
They may recommend switching methods, but never stop taking birth control without consulting your provider first.
The problem may be resolved by reducing the dosage or changing to another form of birth control.
Or, you may need treatment for an underlying health condition.
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